I don't hold much hope for the FPS XCOM, but it could be decent. I'm willing to give it the benefit of a doubt, but it's too early to say much more, have to wait and see. Meanwhile, I'm cautiously hopeful for the Firaxis one, hoping it doesn't turn out to be strategy lite console trash (NB: I'm not saying all console games are trash, only using the term to signify highly streamlined, super-simplified games). Keeping my fingers crossed for it.

However, the true XCOM remake is of course Xenonauts. That's the one I'm most eagerly waiting from this trio of upcoming XCOM games (even if Xenonauts doesn't have the XCOM name, it is an XCOM game in all but name).